untreated
adjective
un·treat·ed
ˌən-ˈtrē-təd 
: not treated
untreated wastewater
especially
: not improved or controlled medically
an untreated case of pneumonia
untreated diabetic patients
Examples of untreated in a Sentence
untreated wool
Recent Examples on the Web
Hearing Loss Once viewed as a quality-of-life issue, untreated hearing loss is now recognized as a powerful and preventable dementia risk factor.
—
Melissa Fleur Afshar, MSNBC Newsweek, 3 Dec. 2025
Due to the cold temperatures, any untreated surfaces could be slippery.
—Cutter Martin, CBS News, 3 Dec. 2025
But Crosby warned commuters who live in rural areas to drive carefully, as many of the county roads will remain untreated throughout the evening and early morning.
—Noe Padilla, IndyStar, 1 Dec. 2025
Winter weather advisory issued for Greater Cincinnati The weather service says untreated surfaces will become snow-covered and the Tuesday morning commute will be impacted.
—David Ferrara, Cincinnati Enquirer, 1 Dec. 2025
See All Example Sentences for untreated
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Melissa Fleur Afshar, MSNBC Newsweek, 3 Dec. 2025
Due to the cold temperatures, any untreated surfaces could be slippery.
—Cutter Martin, CBS News, 3 Dec. 2025
But Crosby warned commuters who live in rural areas to drive carefully, as many of the county roads will remain untreated throughout the evening and early morning.
—Noe Padilla, IndyStar, 1 Dec. 2025
Winter weather advisory issued for Greater Cincinnati The weather service says untreated surfaces will become snow-covered and the Tuesday morning commute will be impacted.
—David Ferrara, Cincinnati Enquirer, 1 Dec. 2025
See All Example Sentences for untreated
Cite this Entry
“Untreated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/untreated. Accessed 7 Dec. 2025.
Copy CitationMedical Definition
untreated
adjective
un·treat·ed
-ˈtrēt-əd
: not subjected to treatment
an untreated disease
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